Really cheap aluminum bare head? Any good?

You are happy with what you have, it ain't broke, don't fix it. You run with what you got.

If you're not counting $'s, what can you do with 906 heads? It depends upon your cylinder head man.

We made 694 horsepower with 451ci and 748 horsepower with 500ci, both on 91 octane with 906 heads, so, we know that is possible.